12543541200 has 120 divisors (see below), whose sum is σ = 44645753600. Its totient is φ = 3344941440.

The previous prime is 12543541169. The next prime is 12543541243. The reversal of 12543541200 is 214534521.

12543541200 is a `hidden beast` number, since 1 + 25 + 435 + 4 + 1 + 200 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 569920 + ... + 591519.

Almost surely, 2^12543541200 is an apocalyptic number.

12543541200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12543541200 is an abundant number, since it is smaller than the sum of its proper divisors (32102212400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12543541200 is a wasteful number, since it uses less digits than its factorization.

12543541200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161466 (or 1161449 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The spelling of 12543541200 in words is "twelve billion, five hundred forty-three million, five hundred forty-one thousand, two hundred".